i have changed the header, cat, the muffler under drive pulley wires (sparkr and ground) but i still want more power fro this 4afe 1.6 .
Can someone help me with upgraded injectors and fuel pump and maybe a block swap.....
anithing will be helpfull............

look around for 4AGE or 4AGZE, actually if you have the money and you are in Southern California I have hook ups for toyota parts.

where did you find a header for the 4afe?